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[shihanzhang <shihanzhang@xxxxxxxxxx>]

Public bug reported:

if we delete the dhcp port,  the dhcp service for corresponding network
is unavailable, because dhcp port is deleted from neutron-server, but
the TAP device on network node is not deleted, and the tag for this TAP
is dead vlan 4095,  and the dhcp service can' t be recoverd.

reproduce steps:
1. create network, subnet
2. delete the dhcp port in this network

I foud the TAP device on network node was not deleted, but its tag is
4095

** Affects: neutron
     Importance: Undecided
     Assignee: shihanzhang (shihanzhang)
         Status: New

** Changed in: neutron
     Assignee: (unassigned) => shihanzhang (shihanzhang)

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https://bugs.launchpad.net/bugs/1469615

Title:
  dhcp service is unavailable if we delete dhcp port

Status in OpenStack Neutron (virtual network service):
  New

Bug description:
  if we delete the dhcp port,  the dhcp service for corresponding
  network is unavailable, because dhcp port is deleted from neutron-
  server, but the TAP device on network node is not deleted, and the tag
  for this TAP is dead vlan 4095,  and the dhcp service can' t be
  recoverd.

  reproduce steps:
  1. create network, subnet
  2. delete the dhcp port in this network

  I foud the TAP device on network node was not deleted, but its tag is
  4095

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